The GERARD’s Roofing System is designed to withstand just about anything climate change may do to your home.
Gerard tiles installed with 4 nails spaced at every second tile module (pan) and one at the side lap have been tested to withstand wind loads of -3.8 kPa. The calculation for a basic velocity of v=25m/s (90km/h) gives results which show the most critical areas on a roof where the suction equals -1.004 kPa. The arrangement for fastening tiles with 4 nails as shown in the instructions is appropriate.
If calculations are done for increased wind loads, GERARD has a solution that has been tested up to -10.3 kPa for areas subject to cyclonic storms with regional wind speeds of up to 70 m/s (252 km/h).
We have heard stories from all over the world where GERARD roofs have protected homes against very strong winds, even hurricanes.
If you don’t want to worry about high winds any more.